229920366081 has 96 divisors (see below), whose sum is σ = 379902720000. Its totient is φ = 123613711200.

The previous prime is 229920366047. The next prime is 229920366121. The reversal of 229920366081 is 180663029922.

It is a happy number.

It is not a de Polignac number, because 229920366081 - 2⁶ = 229920366017 is a prime.

It is a super-2 number, since 2×229920366081² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 229920366081.

It is not an unprimeable number, because it can be changed into a prime (229920366581) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 56089770 + ... + 56093868.

It is an arithmetic number, because the mean of its divisors is an integer number (3957320000).

Almost surely, 2^229920366081 is an apocalyptic number.

229920366081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

229920366081 is a deficient number, since it is larger than the sum of its proper divisors (149982353919).

229920366081 is a wasteful number, since it uses less digits than its factorization.

229920366081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312 (or 4279 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 229920366081 in words is "two hundred twenty-nine billion, nine hundred twenty million, three hundred sixty-six thousand, eighty-one".